Collect and tag your favorite clips at Dabble and subscribe to other users' playlists and favorites ala del.icio.us. Dabble indexes videos from YouTube, blip.tv, Google Video and the Internet Archive, among others. Looks like Dabble's out to build a community of filmmakers and consumers who can swap media - right now there's a "Request and Offer" board where users looking for footage of an "exploding Catsup bottle" or the SARS outbreak can connect up with film producers. While I'd like to see Dabble build out its index ever more (what, no search results for "life hack"?!) it looks like a useful one stop shop for finding video clips. Full disclosure: A friend of mine works on Dabble.